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Table 2 Anthropometry and body composition. In bold are significant results (p < 0.05)

From: Associations between hydration status, body composition, sociodemographic and lifestyle factors in the general population: a cross-sectional study

Variable

Women

Mean (SD)

Men

Mean (SD)

*Difference

Height (m)

1.65 (0.06)

1.77 (0.07)

p < 0.001

BM (kg)

62.9 (8.7)

79.6 (11.5)

p < 0.001

BMI (kg/m2)

Freq

Percent

Freq

Percent

P < 0.001

  < 18.5

5

4.4

1

0.8

 

 18.5—< 25

85

75.2

62

50.4

 

 25—< 30

18

15.9

47

38.2

 

  ≥ 30

5

4.4

13

10.6

 

SMI (kg/m2)

6.93 (0.8)

9.23 (1.2)

p < 0.001

FFMI (kg/m2)

15.6 (1.3)

19.4 (1.9)

p < 0.001

FMI (kg/m2)

7.4 (2.6)

6.1 (2.5)

p < 0.001

VFM (l)

0.97 (0.7)

2.5 (1.6)

p < 0.001

TBW/BM

0.51 (0.05)

0.56 (0.05)

p < 0.001

TBW/FFM

0.75 (0.01)

0.74 (0.01)

p < 0.001

ECW/TBW

0.46 (0.03)

0.43 (0.02)

p < 0.001

ICW/TBW

0.54 (0.03)

0.57 (0.02)

p < 0.001

ECW/ICW

0.85 (0.09)

0.76 (0.08)

p < 0.001

ECW/FFM

0.34 (0.02)

0.32 (0.02)

p < 0.001

ICW/FFM

0.41 (0.02)

0.42 (0.02)

p < 0.001

R (Ω)

661.4 (57.6)

532.7 (56.8)

p < 0.001

R/H (Ω/m)

400.8 (36.3)

301.4 (32.6)

p < 0.001

Xc (Ω)

56.7 (7.9)

50.3 (9.0)

p < 0.001

Xc/H (Ω/m)

34.3 (4.8)

28.5 (5.2)

p < 0.001

PA (°)

4.9 (0.6)

5.4 (0.9)

p < 0.001

  1. *We used the Kruskal–Wallis equality-of-populations rank test to assess differences between BMI categories, two sample t-tests to assess differences between heights and phase angles, and the Wilcoxon-Mann–Whitney test to assess differences between the means of the other variables